document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1127774>Question 1127774</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the vertical and horizontal intercepts for -x^2 - 3x + 9. <BR>\n" );
document.write( "(-x^2 means negative x squared)*\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Find f(x) = ab^x  if f(7) = 1 and if f(-1) = 2. <BR>\n" );
document.write( "(ab^x means ab to the power of x)*<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744237 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=744237\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Find the vertical and horizontal intercepts for -x^2 - 3x + 9. <BR>\n" );
document.write( "(-x^2 means negative x squared)*<BR>\n" );
document.write( "Solve:: -x^2-3x+9 = 0<BR>\n" );
document.write( "Use the Quadratic Formula to get::<BR>\n" );
document.write( "x = [3+-sqrt(9-4*-1*9)]/(2*-1)<BR>\n" );
document.write( "x = [3+sqrt(45)]/-2 or x = [3-sqrt(45)]/-2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Find f(x) = 0<BR>\n" );
document.write( "y = 9<BR>\n" );
document.write( "----------------------- \r<BR>\n" );
document.write( "\n" );
document.write( "Find f(x) = ab^x if f(7) = 1 and if f(-1) = 2. <BR>\n" );
document.write( "(ab^x means ab to the power of x)*<BR>\n" );
document.write( "ab^7 = 1<BR>\n" );
document.write( "ab^-1 = 2<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "Solve for \"b\"::<BR>\n" );
document.write( "Divide top by bottom to get:<BR>\n" );
document.write( "b^8 = 1/2<BR>\n" );
document.write( "b = (1/2)^(1/8) = 0.917<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Solve for \"a\"::<BR>\n" );
document.write( "ab^-1 = 2<BR>\n" );
document.write( "a*1.091 = 2<BR>\n" );
document.write( "a = 1.834<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Ans:: f(x) = 1.834*0.917^x<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------------\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );